(this is a unquoted list)
(+ 2 3)
(+ 2 (+ 3 3))

(+ 2 2 'number')
(concat "abc" " susan " "def")

(substring "The quick brown fox jumped." 16 19)
fill-column
(+ 2 fill-column)

(concat "The " (number-to-string (+ 2 fill-column)) " red foxes.")

(int-to-string (+ 2 70 1.1))
(+)
(*)
(+ 2 'hello)

(quote hello)
